Geoege marie capell



(Nq M oooo 3 Sheet eeeeeee 1. G. M. CAPELL.

ROTARY PAN. No. 324,006, Patented Aug. 11,1885.

Ill

| F l( wf@ f F Z-as i5 Q rave/nio r' I aber @Mam I Odi- (No Model.) 3 Sheets-Sheet 2.

G. M. APELL.

ROTARY PAN. No. 324,006. Patented Aug. 11, 1885.

(NoModel.)

3 Sheets-Sheet 3. G. M. CAPELL.

ROTARY PAN.

` Patented Aug. l1, 1885.

www M4, l l n'vtr/ iwww XM @LW UNITED STATES PATENT GEEICE.

GEORGE MARIE OAPEL'L, OE PAssENHAM, COUNTY OE NOETHAMPTON,

` ENGLAND.

ROTARY FAN.

SPECIFICATION forming part of Letters Patent No. 324,006, dated August 11, 1885.

Application filed June D, 1884. (No model.) Patented in England June 22, 1883, No. 3,117.

To all whom it may concern:

Be it known that I, GEORGE MARIE GAPELL, a subject of the Queen of Great Britain, residing at Passenham, in the county of Northampton, England, have invented certain new and useful Improvements in Rotary Fans, of which the following is a specification.

Figures l and 2 are respectively back and front perspective views of an induction-fan madeaccording to thisinvention,with theouter case removed for the sake of showing the construction of the bodyr of the fan.

A is the central collecting-cylinder, andBB its ports. Each port carriesa curved blade, C, dipping from the cylinder A toward its axis. It is advantageous that the radius of these blades should be the same, or nearly so, as that of the cylinder A. The blades are sometimes continued to the boss of thefan forthe purpose of securing additional strength when a blastof high pressure or velocity is required.

D isadisk having po1tsFF,forn1ed init, and carrying blades E E. Thelines at which these blades spring from the disk D, as well as the lines forming the sides of the ports F F, are always radial to the common center. The radius of the blades, buckets, or collectors H H is also the same as that of the cylinder A.

Gis a scalloped peripheral band forming with the blades E E displacers or collectors H H, which by creating vacuums behind them induce currents of air through the ports F F. The inner edges, c e, ofthe bladeslE may be continued till they meet the cylinder A.

Fig. 3 is a front elevation, and Fig. 4 a side elevation, partly in section, showinga method of mounting this improved fan as a Ventilatingi'an in the wall of a building or to the face of a mine-drift, or for any other purpose. Fig. 5 is a side elevation of an improved blast-fan made according to this invention, but with the buckets or collectors on the opposite side of the disk D.

The, currents of air from the ports in the disk D and the cylinder A are thus discharged on the same side of the disk as the collecting-cylinder A. This cylinder has one end, I, closed, and a boss, J, thereon. It may also have, in the case of large and consequently heavy fans,

a second hoss and arms springing therefrom to 5o join the disk. These arms are at an angle with the vertical plane,with their front edges leading, insomuch that they will assist, as they revolve, in driving the air toward theinterior of the cylinder andin the direction of the air-currents.

Although the ports of the cylinder A are shown closely contiguous to those of the disk D, they may, according to this invention, be separated therefrom by any required distance when 6o such a construction may be desirable, provided that both cylinder and disk are rotated on a common shaft.

The most suitable number of ports and blades for one fan is six of each in the cylinder Aka-nd 6 eight in the disk D; but these numbers may be varied as may be necessary.

Fig. 6 shows another form of port with a segmental hood instead of blade E and band G, as illustrated in Figs. I, 2, 3, and 4. This hood K is the equivalent of the bucket or collector H, described above. Both hood and port are struck with the same radius as the central cylinder of the fan. The rear edge, IL, of this segmental hood meets a diameter where the latter cuts the circumference of the disk D, (as indicated by the dotted line,) the port F being moved slightly behind the inner edge of the hood.

NVhat is claimed isl. In an exhaust or blast fan or fan-wheel, the combination of a collecting-cylinder, A, closed at one end, and provided with `portholes B and blades C, joining the edge of one side of the ports and dipping toward the axis, the curve ofsaid blades corresponding (or nearlyso) with the radius ofthe cylinder in which the ports are formed, a disk, D, provided with ports F, blades E, and scalloped peripherical band G, for collecting or inducing currents of air, as herein set forth and illustrated.

2. In an exhaust or blast fan or fan-wheel, the combination of a disk, D, provided with ports F, blades E, and scalloped peripherical band G, for collecting or inducing currents of air, with a central collecting-cylinder, A, provided with ports B and blades C, all as herein set forth and illustrated.

3. In exhaust or blast fans or fan-wheels of the horoin'dcsci-ibod construction, the Combiw name, in the presence of two subscribing wit nntioinwiihthecoilcoting-oyinderA,ofadisk, nessus7 this 18th day of January, 1884.

D, provided with ports F and wings E on the GEORGE MAR-IE (JAPELL. saine sido as the collecting-Cylinder A, for in- XVitnesses: 5 (lacing currents 0f' air, as herein sot forth and G. XV. VIGSTLEY,

illustrated. JNO. DEANE,

In testimony whereof I hereunto sign in y Holla Q/H Gracecllfzwch Street, London. 

